Home Postcode finder VIC Swan Island Swan Island postcode VIC Swan Island is a locality in Victoria covered by postcode 3225. Postcode 3225 State or territory Victoria (VIC) Region Vic Far Country Add a free Swan Island business listing Be the first listing in Swan Island Common questionsWhat is the postcode for Swan Island?Swan Island, VIC has the postcode 3225.What state is Swan Island in?Swan Island is in Victoria (VIC).Does postcode 3225 cover more than one suburb?Yes. Postcode 3225 covers 4 localities, so the postcode alone does not identify Swan Island. Browse other postcodes in Victoria, or widen the search to every Australian postcode.